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Product measurements and fully symmetric measurements in qubit-pair tomography: A numerical study |
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| Authors: | Yong Siah Teo Huangjun Zhu Berthold-Georg Englert |
| Institution: | a Centre for Quantum Technologies, National University of Singapore, Singapore 117543, Singapore b Department of Physics, National University of Singapore, Singapore 117542, Singapore c NUS Graduate School for Integrative Sciences and Engineering, Singapore 117597, Singapore |
| Abstract: | State tomography on qubit pairs is routinely carried out by measuring the two qubits separately, while one expects a higher efficiency from tomography with highly symmetric joint measurements of both qubits. Our numerical study of simulated experiments does not support such expectations. |
| Keywords: | Quantum state tomography Positive operator measurement Symmetric informationally complete measurement |
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